text: import shutil
  import os.path
  
  
  def copy_without_headers(filename, input_dir, output_dir):
      input_filename = os.path.join(input_dir, filename)
      output_filename = os.path.join(output_dir, filename)
  
      source_file = open(input_filename, 'r')
      source_file.readline()
      target_file = open(output_filename, 'w')
      shutil.copyfileobj(source_file, target_file)
  
  
  def copy_other_files(ratings, tags, links, input_dir, output_dir):
      print('Copy ratings...')
      copy_without_headers(ratings, input_dir, output_dir)
  
      print('Copy tags...')
      copy_without_headers(tags, input_dir, output_dir)
  
      print('Copy links...')
      copy_without_headers(links, input_dir, output_dir)
  